package com.sky.interceptor;

import com.github.xiaoymin.knife4j.core.util.StrUtil;
import com.sky.context.BaseContext;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@Slf4j
public class UserInfoInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

            // 1.获取请求头中的用户信息
            String userInfo = request.getHeader("user-info");
            // 2.判断是否为空
            if (StrUtil.isNotBlank(userInfo)) {
                // 不为空，保存到ThreadLocal
                BaseContext.setCurrentId(Long.valueOf(userInfo));
            }
            // 3.放行
            return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        BaseContext.removeCurrentId();
    }
}
